1 /* 2 * linux/arch/i386/kernel/head32.c -- prepare to run common code 3 * 4 * Copyright (C) 2000 Andrea Arcangeli <andrea@suse.de> SuSE 5 * Copyright (C) 2007 Eric Biederman <ebiederm@xmission.com> 6 */ 7 8 #include <linux/init.h> 9 #include <linux/start_kernel.h> 10 11 #include <asm/setup.h> 12 #include <asm/sections.h> 13 #include <asm/e820.h> 14 #include <asm/bios_ebda.h> 15 #include <asm/trampoline.h> 16 17 void __init i386_start_kernel(void) 18 { 19 reserve_trampoline_memory(); 20 21 reserve_early(__pa_symbol(&_text), __pa_symbol(&__bss_stop), "TEXT DATA BSS"); 22 23 #ifdef CONFIG_BLK_DEV_INITRD 24 /* Reserve INITRD */ 25 if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { 26 u64 ramdisk_image = boot_params.hdr.ramdisk_image; 27 u64 ramdisk_size = boot_params.hdr.ramdisk_size; 28 u64 ramdisk_end = ramdisk_image + ramdisk_size; 29 reserve_early(ramdisk_image, ramdisk_end, "RAMDISK"); 30 } 31 #endif 32 /* Initilize 32bit specific setup functions */ 33 x86_init.resources.probe_roms = probe_roms; 34 x86_init.resources.reserve_resources = i386_reserve_resources; 35 36 reserve_ebda_region(); 37 38 /* 39 * At this point everything still needed from the boot loader 40 * or BIOS or kernel text should be early reserved or marked not 41 * RAM in e820. All other memory is free game. 42 */ 43 44 start_kernel(); 45 } 46